65c is max for that CPU, and even 10-20s after a game crashes, the temp will go down 15-20c. You need to find the max. Try running openhardwaremonitor, it will have columns for all the temps, as well as a min, current, and max. Then you can see what the max temp hit during gaming was, and that will be your crash temp, not what it was after the crash.
So I ran payday for 10 minutes before It crashed. My max temp for CPU was actually 34c and GPU was 52c. The amount of time it takes the game to crash varies sometimes a couple minutes to hours.